Guard for sewing machines



Dec. 21, 1954 1. FElT GUARD FOR SEWING MACHINES Filed July 3, 1952 INVENTOR BY \SHDORE FE \T ATTORM United States Patent GUARD FOR SEWING MACHINES Isadore Feit, New York, N. Y.

Application July 3, 1952, Serial No. 297,140

2 Claims. (Cl. 112-261) This invention relates to a guard for a jump basting sewing machine.

In machines of this type there is no feed foot, the goods being moved beneath the needle by hand. Moreover, these machines are used in commercial production with very high needle speeds. These things combine to make the operation hazardous and the fingers of the operator may enter under the needle from any side.

Moreover, the nature of the work requires that the work shall be clearly visible to the operator, since the machine itself does not assist in controlling the work.

It is an object of this invention therefore to provide a guard to prevent the fingers from getting beneath the needle, but which nevertheless will alford a maximum of vision of the work.

To perform this service satisfactorily the guard must surround the needle on all sides, and be close enough to the work to prevent the fingers from passing beneath it, and yet must be far enough away from the needle to permit full visibility of the maximum sewing area.

The invention accordingly comprises a guard, an embodiment of which is shown in the accompanying drawings, in which:

Fig. l is a side elevation of parts of a jump basting sewing machine with the guard attached.

Fig. 2 is an exploded view of the guard in the form chosen for illustration; and

Fig. 3 is a section on the line 3-3 of Fig. 1.

The conventional parts of the jump baster comprise the head carrying the reciprocating needle bar 11 to which the needle 12 is attached at 13. A presser 14 concentric with the needle bar is spring pressed downwardly relatively to the needle bar in the usual manner by a suitable spring, which may be within the needle bar, but it is provided with the usual stop to prevent its downward movement so that when the needle bar is moved down the presser moves with it until the presser bears against the work; further movement of the needle bar moves the needle into the fabric.

As here shown, the needle is off center from the needle bar and a hole is provided in the presser through which the needle may push. On the up stroke of the needle it first withdraws from the fabric and then, the lost motion between the needle bar and the presser being taken up, the needle and presser are raised together to free the fabric for movement.

These are the common features of a jump baster and need not be described in greater detail.

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The guard of this invention comprises a circular guard 15 concentric with the needle, held a little closer to the fabric than the presser and needle and so spaced from the needle that a maximum visibility of the work beneath the needle is obtained, without giving freedom at any point for the fingers to get beneath the needle.

As shown the guard is made of spring steel wire having its circle 16 of about an inch in diameter interrupted at the back by having the ends of the wires bent up as shown to form arms 17 to fit against the flat face 18 of a stud 19 which is attached to the head of the machine. The wire ends are held against the flat face 18 by means of a plate 20 and screws 21.

The stud 19 is shown as provided with a cylindrical portion 22 which can fit within a socket in the bottom of the head, and can be held in place by a nut 23. As will be seen from the drawing the plate 20 is provided with lateral flanges 24 which embrace the arms 17.

The concentric portion of the guard is adjustable in height by loosening the screws 21 and it may for many purposes be held about of an inch above the top level of the fabric.

With this construction the guard gives complete protection in every direction, and at the same time it gives a minimum of obstruction to the vision.

What is claimed is:

1. A guard for a jump basting machine having a needle and a head comprising a ring and means for holding said ring concentric with the said needle, said ring being of a diameter and being held in a horizontal plane at a height to obstruct accidental insertion of a finger beneath the needle at any point in the stroke thereof, said ring comprising a circular member having its ends bent upward to provide two parallel arms, said holding means comprising a stud adapted to be fastened to the head of the machine, having a face to receive said arms and a clamp having lateral flanges to embrace said arms and screw means passing through said plate and between said arms for holding said arms upon said stud.

2. A guard for a jump basting machine having a needle and a head comprising a ring and means for holding said ring concentric with the said needle, said ring being of a diameter and being held in a horizontal plane at a height to obstruct accidental insertion of a finger beneath the needle at any point in the stroke thereof, said ring comprising a circular member having its ends bent upward to provide two parallel arms, said holding means comprising a stud adapted to be fastened to the head of the machine, having a face to receive said arms and clamping means for clamping said arms against said face.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 221,639 Wellens Nov. 11, 1879 1,408,821 Merrow Mar. 7, 1922 FOREIGN PATENTS Number Country Date 21,842 Great Britain 1911 

